You are off topic for the forum that you posted to, which is dedicated to Microsoft Security Essentials
I recommend that you contact the PC manufacturer for support, since I have no idea what could possibly be flashing.
Your question may be better posed to one of the Hardware forums here, depending on your operating system:
Vista: http://social.answers.microsoft.com/Forums/en-US/category/windowsvista
XP: http://social.answers.microsoft.com/Forums/en-US/category/windowsxp
Windows 7: http://social.answers.microsoft.com/Forums/en-US/category/windows7
-steve
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